All these things are highly anecdotal obviously. But the younger dog seems to try it out whenever my older dog does it. I can tell my older dog is having stomac

All these things are highly anecdotal obviously. But the younger dog seems to try it out whenever my older dog does it. I can tell my older dog is having stomach problems by lack of appetite and/or energy, which I doubt my younger dog can consciously link to stomach problems. But who knows, their sense of smell is inconceivably better than ours, maybe they can smell each others' ailments to an extent.